English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

Do you think that eukaryotes could have evolved without prokaryotes?
why or why not

2007-01-24 06:06:19 · 3 answers · asked by ck_scorpio40 2 in Education & Reference Homework Help

3 answers

possibly, but in terms of evolution, it appears that eukaryotes developed because of a symbiotic relationship with an energy producing prokaryotic cell called a mitochondia. All eukaryotes have these so, the answer is no as asked and if this is a test question this would be the best answer. In terms of whether it is possible that some other form of eukaryotic cell could have evolved, my guess would be yes, but it would have been quite different than our current cell structures and would have to out compete all of the current eukaryotes.
Mitochondria are the energy producing organelles in eukaryotic cells and have their own DNA which is arranged as a prokaryotic DNA, suggesting that eukaryotes and mitochondria developed symbiotically with the eukaryotes providing food and shelter to to mitochondria in exchange for aerobic energy production
Since all eukaryotes have mitochondria, it is further suggested that this symbiosis was necessary to create eukaryotes as we know them today

2007-01-24 06:23:46 · answer #1 · answered by cuban friend 5 · 0 1

Most biologists who study eukaryotic cell structure think that eukaryotes evolved from
prokaryotes. Many of the organelles of eukaryotes resemble bacteria, perhaps engulfed
long ago by much larger cells. Scientists hypothesize that bacterial “trespassers”
remained inside these cells, gradually losing their ability to live independently. These
invading bacteria became organelles, and eukaryotic cells were the result. The fact that
some organelles have their own distinctive DNA provides additional evidence for this
hypothesis.
All living cells that are not bacteria are eukaryotes. Your cells are eukaryotic, as are tree
cells and elephant cells. The “animalcules’ seen by van Leeuwenhoek also were
eukaryotic.http://www.laramie1.k12.wy.us/mjhs/sawyerscience/pdf/unit7/Understandingmoreaboutcells.pdf

ss

2007-01-24 06:17:01 · answer #2 · answered by Littlebit 6 · 0 1

no
bez both depend on each others, and the difference is prokaryotic has more organelles

2007-01-24 06:43:38 · answer #3 · answered by Party's Queen'' 2 · 0 2

fedest.com, questions and answers